Alexa Mckerrow

Dr. Alexa Mckerrow


Research Focus & Metrics

Academic Career Length

15Years (2012-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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11 August 2014 in Remote Sensing
Verified
Journal Article
Open access
PDF file
JWJames Wickham
James Wickham
CHCollin Homer
Collin Homer
JVJames Vogelmann
James Vogelmann
AMAlexa Mckerrow
Alexa Mckerrow
RMRick Mueller
Rick Mueller
JCJohn W. Coulston
John W. Coulston
The Multi-Resolution Land Characteristics (MRLC) Consortium demonstrates the national benefits of USA Federal collaboration. Starting in the mid-1990s as a small group with the straightforward goal of compiling a comprehensive national Landsat dataset that could be used to meet agencies’ needs, MRLC has grown into a group of 10 USA Federal Agencies that coordinate the production of five different products, including the National Land Cover Database (NLCD), the Coastal Change Analysis Program (C-CAP), the Cropland Data Layer (CDL), the Gap Analysis Program (GAP), and the Landscape Fire and Resource Management Planning Tools (LANDFIRE). As a set, the products include almost every aspect of land cover from impervious surface to detailed crop and vegetation types to fire fuel classes. Some products can be used for land cover change assessments because they cover multiple time periods. The MRLC Consortium has become a collaborative forum, where members share research, methodological approaches, and data to produce products using established protocols, and we believe it is a model for the production of integrated land cover products at national to continental scales. We provide a brief overview of each of the main products produced by MRLC and examples of how each product has been used. We follow that with a discussion of the impact of the MRLC program and a brief overview of future plans.

1 March 2015 in Journal of Environmental Management
Verified
Journal Article
Closed access
Jennifer CostanzaJennifer Costanza
Jennifer Costanza
ATAdam J. Terando
Adam J. Terando
AMAlexa Mckerrow
Alexa Mckerrow
JCJaime A. Collazo
Jaime A. Collazo

1 January 2015 in AIMS Environmental Science
Verified
Journal Article
Open access
PDF file
Jennifer CostanzaJennifer Costanza
Jennifer Costanza
RARobert C. Abt
Robert C. Abt
AMAlexa Mckerrow
Alexa Mckerrow
JCJaime A. Collazo
Jaime A. Collazo
We linked state-and-transition simulation models (STSMs) with an economics-based timber supply model to examine landscape dynamics in North Carolina through 2050 for three scenarios of forest biomass production. Forest biomass could be an important source of renewable energy in the future, but there is currently much uncertainty about how biomass production would impact landscapes. In the southeastern US, if forests become important sources of biomass for bioenergy, we expect increased land-use change and forest management. STSMs are ideal for simulating these landscape changes, but the amounts of change will depend on drivers such as timber prices and demand for forest land, which are best captured with forest economic models. We first developed state-and-transition model pathways in the ST-Sim software platform for 49 vegetation and land-use types that incorporated each expected type of landscape change. Next, for the three biomass production scenarios, the SubRegional Timber Supply Model (SRTS) was used to determine the annual areas of thinning and harvest in five broad forest types, as well as annual areas converted among those forest types, agricultural, and urban lands. The SRTS output was used to define area targets for STSMs in ST-Sim under two scenarios of biomass production and one baseline, business-as-usual scenario. We show that ST-Sim output matched SRTS targets in most cases. Landscape dynamics results indicate that, compared with the baseline scenario, forest biomass production leads to more forest and, specifically, more intensively managed forest on the landscape by 2050. Thus, the STSMs, informed by forest economics models, provide important information about potential landscape effects of bioenergy production

1 January 2012 in Avian Conservation and Ecology
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Journal Article
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PDF file
MIMonica N. Iglecia
Monica N. Iglecia
JCJaime A. Collazo
Jaime A. Collazo
AMAlexa Mckerrow
Alexa Mckerrow
Iglecia, M. N., J. A. Collazo, and A. J. McKerrow. 2012. Use of occupancy models to evaluate expert knowledge-based species-habitat relationships. Avian Conservation and Ecology 7(2): 5.http://dx.doi.org/10.5751/ACE-00551-070205